Answer:
31.17 months
Step-by-step explanation:
For computing the number of months required to pay off the stereo system we need to apply the NPER formula i.e be shown in the attachment below:
Given that,
Present value = $400
Future value = $0
Rate of interest = 12% ÷ 12 months = 1%
PMT = $15
The formula is shown below:
= NPER(Rate;PMT;-PV;FV;type)
The present value come in negative
So, after applying this, the number of months is 31.17 months